Procedure for the measurement of a gas content of molten metal and probe used thereby.

摘要

Procedure for the measurement of a gas content of molten metals, according to which a probe (1), which contains a tube (1) which is closed off at its immersion extremity by a porous ceramic membrane (2) that is permeable for the gas to be measured but is impermeable for the molten metal, in which tube (4) a vacuum is sucked, is brought into the molten metal, so that the porous membrane (2) is immersed and, after the creation of the vacuum and the immersion, measures the pressure of the gas to be measured in the tube (4) that has diffused through the membrane from the molten metal, characterised in that a probe (1) is immersed in the metal of which at least the porous membrane (2) is covered gastightly on the outside by a cover (3) which melts in the molten metal and the vacuum is created inside the cover (3).